AutoTrader.com recently reported that its traffic numbers dramatically increased last month, with the number of unique visitors up 14 percent, sessions up 17 percent, used car searches up 19 percent, and page views up 26 percent. Unique visitors for May reached 7.5 million, while visitors spent an average of 27 minutes on the site. This is an increase of 13 percent over last year. In May, AutoTrader.com’s visitors conducted more than 42 million vehicle searches from the company’s database of 2.2 million vehicles.